164 CASEY 



unequal, the median line not or very feebly impressed but more dis- 

 tinctly so and densely punctate anteriorly and gradually more deeply 

 to a broad pit basally, laterally very roughly, densely and coarsely 

 punctate, with a sublateral callous vitta subinterrupted by a post- 

 median depression and with numerous irregular callosities along the 

 side margins; elytra but little wider than the prothorax, twice as long 

 as wide, parallel, the sides gradually rounding and obUque in scarcely 

 more than apical third, becoming distinctly and rather abruptly sinuate 

 at the apices, which are slightly prolonged, the tips deeply sinuate and 

 acutely bispiculose; surface extremely rough and irregularly diversified 

 with moderately coarsely and closely punctate depressed areas, large 

 polished elevated anastomosing spots and larger serial punctures ; along 

 the side margins there are small oval areas of very dense white pubes- 

 cence; under surface rugulose, not coarsely so on the abdomen, the axial 

 line broadly smooth; male with the middle tibiae unmodified, the pro- 

 sternum narrowly and feebly impressed and punctured but not very 

 pubescent along the middle, the metasternum flat, feebly, narrowly 

 impressed along the median line, the fifth ventral rectangularly emar- 

 ginate at apex, the notch with a short and very broad truncate lobe; 

 female with a small sinus at the tip of the fifth ventral, from which 

 projects a long slender truncate tooth, the surface of the segment with 

 two vestigial and inconstant medial ridges. Length 13. 0-15. 8 mm.; 

 width 4.6-5.8 mm. Massachusetts (BrookHne), New York and In- 

 diana. [ =asperata Lap. -Gory, molitor Mels. and spreta Lee. nee Lap.- 

 Gory] scobina Chev. 



The identification of scobina with asperata (Lap. -Gory nee Lee.), 

 is given on the authority of the Kerremans Catalogue and that of 

 americana Hbst., with spreta (Lap.-Gory nee Lee.) rests upon the con- 

 clusion of LeConte that, by the terms of its original description, it 

 seems to resemble that species more than any other; but this surmise 

 was marked as doubtful by that author. If it is not spreta it is most 

 probably chrysea Mels,, of the preceding group, but I have been 

 unable to consult the original description, which, according to LeConte, 

 is very ambiguous. At any rate some provision has to be made for 

 it, as it was one of the first of our species to be made known in the 

 literature of the subject and I adopt spreta as its synonym, because 

 the weight of evidence seems to show that this disposition is most 

 likely to be correct. The species is apparently rare and my descrip- 

 tion is compiled from those of Melsheimer and LeConte. Scobina, 

 on the other hand, is rather abundant and my collection contains a 

 good series. It seems to me unnecessary to propose two groups for 

 these species, as suggested by LeConte, for they are apparently very 

 much alike in everything but the male sexual characters. Crotch 



